Fichas
Exercise 1
Fichas del conjunto (14)
- 1Describe the function of the following parts of the microscope: -ocular lensLenses through which the object on the stage is viewed; may be monocular or binocular; usually provides additional 5x or 10x magnification
- 2Describe the function of the following parts of the microscope: -objective lensLenses of different power to magnify the object on the stage; usually 10x, 40x, and 100x power
- 3Describe the function of the following parts of the microscope: -iris diaphragmAdjusts the amount of light entering the condenser
- 4Describe the function of the following parts of the microscope: -condenserCollects and concentrates light upward through the object on stage
- 5List three things they must do in order to put away their microscopes correctly.1) Remove slide from stage
2) Wipe away the oil on the oil-immersion objective
3) Place the low-power objective in vertical position - 6Recall the difference between magnification and resolutionMagnification: enlarges the object being viewed
Resolution: ability to distinguish detail - 7State why oil is used on a slide to be examined with the oil-immersion objective.Prevents scattering of light rays passing through the object and to direct them straight upward through the lens.
- 8Explain the advantage of parfocal lenses.The object will remain in focus as you switch from one objective to another, preventing damage to the ocular lenses.
- 9Why is focal length important when using the oil-immersion objective?Prevents damage or scratching to the oil-immersion objective or damage to the slide.
- 10Describe the best way to adjust the amount of light entering your specimen.Adjusting the iris diaphragm of the condenser.
- 11If a 5x ocular lens were used with your microscope, what maximum total magnification could be achieved?500x
- 12When should the coarse and fine adjustment knobs be used?With the low-power objective and the high-dry lens.
- 13If you see moving particles in a hazy visual field, what steps can you take to obtain a clearer image?Clean the objective and/or oculars with clean, dry lens paper.
- 14What would you observe if you forgot to use oil with the oil-immersion lens?Images that are not sharp or detailed.
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- College (Lab) MEDT 2100: Medical Microbiology Fichas sobre Exercise 1, creado por harrisoncr el 27/08/2015.
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- harrisoncr
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